Sierra 25W40 FC-W Synthetic 4 Cycle Oil

Sierra 25W40 FC-W Synthetic 4 Cycle Oil superior heavy corrosion protection , advanced lubrication for reduction of wear to internal engine components, minimized piston ring deposits.

The best four stroke oil for boats as its formula ensures the engine runs clean whilst running at wide varying temperatures. Extensively tested for outstanding performance.

A car has multiple gears that means is can cruise along in overdrive at around 2,000 revs being the norm. However a boat under load will be revved out much higher for longer periods on time, which means it requires extra lubrication.

Replaces:

Mercury and Mariner  (Quicksilver)